def code(s):
    return ord(s)-ord("A")
def codeR(n):
    return chr(ord("A")+n)

ans = []
for i in range(1, 26):
    for j in range(26):
        if i == 1:
            ans.append(codeR(j)+codeR(j))
        ans.append(codeR(j*i%26)+codeR((j+1)*i%26))

for a in ans:
    print(a)